气候变化领域集成服务门户(CCPortal): Rapid shoaling of aragonite saturation horizon in the northern Indian Ocean

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DOI	10.1088/2515-7620/ad45c1
	Rapid shoaling of aragonite saturation horizon in the northern Indian Ocean
	Sridevi, B.; Sarma, V. V. S. S.
发表日期	2024
ISSN	2515-7620
起始页码	6
结束页码	5
卷号	6 期号:5
英文摘要	Anthropogenic carbon dioxide (CO2) penetrates up to 1000 m of water column in the Indian Ocean resulting in acidification and corrosion of aragonite skeletal material. The shallowest aragonite saturation horizon (ASH) was observed in the Bay of Bengal (BoB; 219 +/- 10 m) within the tropical Indian Ocean. The ASH shoaled at the rate of 6.3 +/- 5 and 4.4 +/- 3 m yr(-1) in the past four decades in the BoB and Arabian Sea respectively. As a result, an increase in total alkalinity (TA) was observed at the rate of 0.5 +/- 0.3 and 0.25 +/- 0.2 mu mol kg(-1) yr(-1) at the depth of ASH in the BoB, and Arabian Sea respectively. While the shoaling rate of ASH remained the same in the Arabian Sea over the past four decades, in contrast, rapid shoaling was observed in the BoB in the recent decades due to higher accumulation of anthropogenic CO2 in the upper ocean associated with an increase in river discharge and decomposition of riverine organic matter. These two processes decreased the pH resulting in corrosion of aragonite skeletal material and increased TA at the depth of ASH in the BoB. Under a business-as-usual scenario, aragonite-secreting organisms will be seriously affected by the middle of this century in the BoB.
英文关键词	northern Indian ocean; aragonite saturation horizon; anthropogenic CO2; river discharge; climate change
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001223229500001
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/296496
作者单位	Council of Scientific & Industrial Research (CSIR) - India; CSIR - National Institute of Oceanography (NIO); Academy of Scientific & Innovative Research (AcSIR)
推荐引用方式 GB/T 7714	Sridevi, B.,Sarma, V. V. S. S.. Rapid shoaling of aragonite saturation horizon in the northern Indian Ocean[J],2024,6(5).
APA	Sridevi, B.,&Sarma, V. V. S. S..(2024).Rapid shoaling of aragonite saturation horizon in the northern Indian Ocean.ENVIRONMENTAL RESEARCH COMMUNICATIONS,6(5).
MLA	Sridevi, B.,et al."Rapid shoaling of aragonite saturation horizon in the northern Indian Ocean".ENVIRONMENTAL RESEARCH COMMUNICATIONS 6.5(2024).